Warning: Cannot modify header information - headers already sent by (output started at D:\xampp\htdocs\auto-habari\admin\userindex\inc\main_nav_head2.php:215) in D:\xampp\htdocs\auto-habari\admin\userindex\vehicles\insert.php on line 754

Re: Apart from Head("") is there an other way to redirect in php?

Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP. It is a very common error to read code with include, or require, functions, or another file access function, and have spaces or empty lines that are output before header() is called. The same problem exists when using a single PHP/HTML file.

Even a space being output before the header() call can cause the error message you posted.